问题描述：
英语翻译
The wastewater is characterized by a strong dark color,high chemical oxygen demand (COD) concentration,presence of refractory volatile organic compound and low biodegradability.
presence of refractory volatile organic compound 应该翻译成什么?含有难挥发有机物?
晕 不是要用在线翻译翻译
The wastewater is characterized by a strong dark color,high chemical oxygen demand (COD) concentration,presence of refractory volatile organic compound and low biodegradability.
presence of refractory volatile organic compound 应该翻译成什么?含有难挥发有机物?
晕 不是要用在线翻译翻译
问题解答：
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